2021 Mercedes S Class engine computer price snapshot
- Low
- $139
- Average
- $471
- High
- $962
Year-specific price guide
Used 2021 Mercedes S Class Engine Computer prices
Year-specific used engine computer pricing for the 2021 Mercedes S Class, built from real salvage yard and junkyard listings with condition grade and fitment detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 3, 2026AS
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Part overview
About the 2021 Mercedes S Class engine computer
A used 2021 Mercedes S Class engine computer costs between $139 and $962, with a median of $512 from 72 salvage yard listings.
What the engine computer does, common failure signs, and prices across all vehicles: used engine computer price guide →
Also known asECUECMPCMEngine Control ModuleEngine Control UnitPowertrain Control Module
Price summary
A used 2021 Mercedes S Class engine computer costs $139 to $962, with a median asking price of $512. Based on 72 priced salvage yard listings across the US, compatible across 2019–2024 (6 model years), updated Oct 3, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$516
Grade B (good)$539
USD
Condition comparison
Price by part grade
Grade AClean / low wear$139–$96264 listings
Grade BStandard used$399–$5695 listings
Grade XUngraded$200–$4493 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $139–$962 | 64 | |
| Grade BStandard used | $399–$569 | 5 | |
| Grade XUngraded | $200–$449 | 3 |
Median by grade
Grade price comparison
Grade A$516
Grade B$539
Ungraded$200
Median asking price by seller-reported condition grade · $139–$962 overall range
Replacement cost
What is the 2021 Mercedes S Class engine computer replacement cost?
- Used part
- $512
- 2021 Mercedes S Class median asking price
- Labor
- $95–$450
- 1–3 hours at $95–$150/hr
- Estimated total
- $605–$960
- median used part + labor
Labor is a typical independent-shop range for engine computer replacement, not a quote for your vehicle; it does not include programming and key relearn procedure. The part price is the live median from the salvage-yard listings on this page. Full engine computer replacement cost breakdown
Fitment matters
Price by trim & variant
223 Type (S models, sedan), electronic control module, S50049 listingsInterchange 2019–2023$569$224 – $962
223 Type (S models, sedan), electronic control module, S58010 listingsInterchange 2021–2022$257$150 – $431
223 Type (S models, sedan), electronic control module, S580 Maybach10 listingsInterchange 2021–2022$257$150 – $431
217 Type (S models, coupe and convertible), electronic control module, S5602 listings$775$500 – $775
217 Type (S models, coupe and convertible), electronic control module, S631 listingsInterchange 2022–2024$139$139 – $139
Year-specific context
How does the 2021 Mercedes S Class compare?
The 2021 guide is based on 78 observed listings, including 72 with posted prices. Its $512 median is 112% above the Mercedes S Class guide's $241 median.
Among the 10 model years with current price data, 2021 ranks #9 from lowest to highest median.
Interchange data shows this part is also listed under model years 2019, 2020, 2022, 2023, 2024. Shopping across all 6 compatible years may surface better prices or condition grades.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Compare model years
What does a Mercedes S Class engine computer cost in other years?
20242 listingsCompatible$306$125 – $306202326 listingsCompatible$1,038$600 – $1,150202231 listingsCompatible$446$150 – $9622020468 listingsCompatible$300$50 – $1,0372019180 listingsCompatible$295$60 – $1,0372018237 listings$323$44 – $1,0372017367 listings$241$44 – $6082016478 listings$193$45 – $6082015471 listings$200$44 – $608
Keep browsing this vehicle
What other Mercedes S Class parts are priced?
01wide ±108%
AC Compressor
$250median
$80$620
02wide ±181%
ABS Module
$255median
$75$1,000
03wide ±198%
Air Bag
$225median
$50$940
04wide ±186%
Alternator
$202median
$36$788
05wide ±209%
Axle Shaft
$278median
$50$1,212
06wide ±136%
Blower Motor
$105median
$45$331
07wide ±259%
Brake Caliper
$280median
$50$1,499
08wide ±181%
Rear Bumper Assembly
$946median
$170$3,600
09wide ±190%
Front Bumper
$600median
$225$2,500
10wide ±137%
Rear Bumper
$550median
$150$1,655
11wide ±239%
Car Radio
$271median
$55$1,350
12wide ±171%
Center Console
$212median
$63$787
13wide ±189%
AC Condenser
$200median
$45$800
14wide ±222%
Control Arm
$180median
$50$849
15
Differential
Price data updating
16wide ±137%
Door Assembly
$998median
$250$2,975
17wide ±125%
Drive Shaft
$342median
$108$962
18wide ±105%
Engine
$9,999median
$3,995$25,000
19wide ±133%
Exhaust Manifold
$250median
$79$742
20wide ±145%
Fender
$475median
$122$1,499
21wide ±70%
Fog Light
$242median
$70$410
22wide ±246%
Front Seat
$402median
$90$2,070
23wide ±182%
Fuel Pump
$150median
$33$580
24wide ±176%
Fuel Tank
$340median
$125$1,324
25wide ±252%
Grille
$300median
$50$1,560
26wide ±118%
Headlight Assembly
$1,450median
$425$3,850
27wide ±207%
Heater Core
$116median
$60$540
28wide ±99%
Hood
$1,000median
$215$2,185
29wide ±175%
Ignition Switch
$100median
$35$384
30
Instrument Cluster
Price data updating
31wide ±135%
Intake Manifold
$181median
$35$525
32wide ±75%
Master Cylinder
$87median
$45$175
33wide ±116%
Side Mirror
$600median
$210$1,599
34tight ±15%
Power Steering Pump
$831median
$630$887
35wide ±87%
Quarter Panel
$777median
$340$1,685
36wide ±166%
Radiator
$200median
$55$720
37wide ±190%
Rear View Mirror
$119median
$40$493
38wide ±148%
Starter
$125median
$30$400
39wide ±139%
Steering Column
$225median
$75$699
40wide ±129%
Steering Rack
$950median
$300$2,750
41wide ±149%
Steering Wheel
$610median
$150$1,973
42wide ±203%
Strut
$350median
$78$1,500
43wide ±216%
Sunroof
$660median
$150$2,999
44wide ±86%
Tail Light
$406median
$175$872
45wide ±243%
Tailgate
$560median
$100$2,825
46wide ±189%
Throttle Body
$120median
$39$493
47spread ±40%
Torque Converter
$755median
$299$909
48wide ±77%
Transfer Case
$590median
$293$1,200
49wide ±226%
Transmission
$1,799median
$305$8,444
50wide ±269%
Transmission Control Module
$135median
$25$750
51wide ±256%
Turbocharger
$450median
$90$2,398
52wide ±174%
Water Pump
$150median
$25$546
53wide ±134%
Wheels
$475median
$125$1,400
54wide ±112%
Window Regulator
$199median
$50$495
Common questions
2021 Mercedes S Class engine computer FAQ
How much is a used 2021 Mercedes S Class engine computer?
Based on 72 priced salvage-yard listings, a used 2021 Mercedes S Class engine computer lists between $139 and $962, with a median asking price of $512.
How much does it cost to replace a 2021 Mercedes S Class engine computer?
Using a used part, a 2021 Mercedes S Class engine computer replacement typically runs $605–$960 all-in: the median used engine computer for this year lists at $512, and independent-shop labor for engine computer replacement typically takes 1–3 hours at $95–$150/hr ($95–$450). The labor figure does not include programming and key relearn procedure. Labor is a national part-level estimate, not a quote for your vehicle.
Will a 2021 Mercedes S Class engine computer fit another year?
Based on salvage-yard interchange data, listings for the 2021 Mercedes S Class engine computer also appear under model years 2019, 2020, 2022, 2023, 2024, suggesting these years share compatible fitments. Always verify the exact part number, drivetrain, trim, and your VIN before buying — interchange compatibility can vary by variant.
How much is a 2021 Mercedes S Class ecu?
A ecu is another name for a engine computer. The prices on this page cover the 2021 Mercedes S Class engine computer — median $512, from 72 listings.